Narrow tool-support.



W. SCHELLENBACH, W. LODGE & N. D. CHARD.

NARROW TOOL SUPPORT.

APPucATmN FILED :ma 191s 1,154,939. Patentedsept. 28, 1915.

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WLLIAM scrinntnnieacn, or Hanru/"ELL, Ann wILLiAM Lonen AND NICHOLAS(1I-IARD, OF CINCINNATI, OHIO, ASSIGNORS TO THE LODGE & SHIPLEY MACHINETOOL COMPANY, 0F CINCINNATI, OHIO, ACORPORATION OF (5I-IIC.V

NARROV TOOL-SUPPORT.

Patented Sept. 28, 1915.

Application filed January 8, 1913. Serial No. 740,802.

T0 all 'whom it may concern 1 Be 1t known that we, lViLLnxM bcnnLLEN-naci-r, of Hartwell, and l.VILLIAM Lonen and` NICHOLAS l). Cirami, ofCincinnati, in the county oflamilton and State of Ohio, respectively,citizens of the United States, have invented certain new and useful Im:proveniente in yNarrow Tool-Supports, of which the following is aspecification. Y

This invention relates to means for supporting a cutter for useinconnectionwith machine tools, such as engine lathes.

One object within the contemplation of this invention is to renderavailable a tool post yadapted to use in connection with the carriage ofa lathe in taking high-duty cutsV in the work, and which will be of asimple yet serviceable and effective construction.

Another object is to devise a tool post construction that will possess amaximum degree of rigidity and which at the same time will enable thetool to take narrow deep cuts without any interference of the work withthe tool support.

Another object is to provide a simple arrangement whereby a cutting toolmay be used for taking point cuts and side cuts simultaneously.

Other objects will be in part apparent from the annexed drawings and inpart pointed out in the following description in connection therewith.

In order that this invention may be so fully disclosed tothose skilledin this art that they may be enabled to embody the same in the variousforms and modifications to which it is readily subject, drawingsexemplifying a preferred form have been appended as a part of thisdisclosure, and in such drawings, like characters of reference denotecorresponding parts throughout all of the iigures, of which Figure 1 isaside elevation showing oney embodiment of this invention. Fig. 2 is aplan view thereof. Fig. 3 is a front end elevation of the base showingthe Vuprising' flange.

Continuing' now by way of ra rmore detailed description, 1 indicates thetraveling base that, by means of suitable guide waysV is arranged toslide on a portion 2 of a carriage transversely to the guides of thelathe bed. This motion may be produced in any suitable manner asibymeans of a shaft 3 mounted in the part 2 and driven from the rack of thelathe bed, by the gear l, orby the hand wheel 5.V A gear 6 is keyed tothe shaft 3 and meshes v. ith a gear 7, so as to turn a feed screw 8.This feed screw is in threaded connection with two nuts 9 and 10 to thebase 1, by suitable bolts 11,4 12, and to take up back lash a wedgeblock 13 may be positioned between the nuts 9 and 10, as will beunderstood.

Rising from the rear of thebase 1 is a relatively heavy flange 14 thatpreferably extends entirely across the end of such space and has arecess 15, (see Fig. 3) and preferably also a web 16 serves to reinforcethe fia-nge 1e and at the same time provide for the connection of thetool supporting member. r)The rear edge of this web 16 is concaved abouta, radius extending from the center of the work, so as to provide aclearance as indicated by 17 and enable the parts to be moved as closeto the work as possible without interference therewith.

The tool support is indicated by 18 and has a narrow rear edge 19, andis elongated transversely to the axis of the work as shown by thedrawing. This member 1S is secured. laterally to the web 16 by means ofsuitable bolts 2O and has a forward extension 21 that is seated in slot15. In this upper edge there is provided a seat 22 to accommodate across piece 23 that is apertured at its ends.

Bolts'24 pass through these apertures andr have their ends tapped intothe top surface of the flange 14, so as to securely clamp the portion 21in the seat 15, as will be understood.

Extending forwardly from the rear edge of the member 18 is a slot 25,that is adapted to receive a suitable cutting tool indicated by 26. Inthe arrangement shown, this cutting tool not only has its cutting endextended beyond the outline of the member 18, but it also has right andleft hand lateral cutting edges 27 extending beyond the lateral faces ofthe member 18 so that when such tool is forced into the work, and indressing down the crank pins and sides of the crank arms of a crankshaft, it may' simultaneously cut onseveral sides. Conwheel 31, so thatby turning such, wheel, tension .may be applied to the shank 29ste;

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ven'iently to enable this tool to. be secured.V positively inl placeagainst chatterl underV draw the wedge block 28 forwardly-and thusclamp. the toel- 26 iirmly in place. To prevent intermediate twist ofthe shank 29 it finay be provided with a slot 32, through which afkey orpin 33, passes.

From the foregoing it will be perceived that this invention is welladapted tor achieve the objects aforesaid through a simple yet fessentially rigid and effective construction.

This apparatus finds utility especially in high dutyl work, as inroughing out and finishing cranlr pins and the sides of the crank armsin a crank shaft.

VHaving' thus described this invention, we

npiis of this patent may be* obtained for Shaft therefore claim as newand desire to.V secure by Letters Patent of the United States tool-postof the nature disclosedcomblning a traveling base, a narrow plate-likeupright tool support on saidy base the front t edge of which is formedwith a notch ex* tending clear through the plate, the upper surfacedefining the notch being tapered, a taper wedge block kin the notch, ascrew swiveled in the block and extending rearwardly through the plate,and' a rotatable nut on the rear end of the screw eX- tcrior of 'heplate and held against longitudinal movement by the rear pertion of theplate, enabling the ready release of the engagement between theVwedge-bloch andv a tool clamped thereby within the notch.

In testimony whereof, Awe have hererinta set our hands.v f

XlLLIAM SCHELLENBACH. n lVlLLA/l LODGE. j NCHOLAS D CHARD.

Witnesses:

CLARENCE FOSTER, EMMA SPENER.

v-e cents each, by addressing the; S-Qozgzgiissigonqa ai; @atenta`Washington, Il. 6,.1

